CVE-2026-43493

crypto: pcrypt - Fix handling of MAY_BACKLOG requests

CVSS 9.8 CRITICALEPSS 0.6%

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix handling of MAY_BACKLOG requests MAY_BACKLOG requests can return EBUSY. Handle them by checking for that value and filtering out EINPROGRESS notifications.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236 https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67 https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110 https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2 https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276